Division of Environmental Physics - User: student
Faculty of Mathematics, Physics and Informatics, Comenius University Bratislava

QUANTIFYING THE CHEMICAL COMPOUNDS THAT EMERGE DURING THE POLYMER PROCESSING BY A SURFACE DIELECTRIC BARRIER DISCHARGE UTILIZING LIQUID ELECTRODES

Galmiz O., Cimerman R., Machala Z.
3rd Plasma for Nanotechnology and Bioapplications Workshop, Hustopeče, Czech Republic, October 9-12, p. 40-41 (2023)

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Abstract:

In spite of the rapid expansion of low-temperature plasma physics and technology applications, numerous plasma processes remain inadequately comprehended, particularly the physical and chemical interactions occurring between plasmas and solid or liquid substrates. Consequently, it becomes imperative to implement precise diagnostic methodologies to quantify the flow of chemically active species generated during these processes, identify the relevant reaction pathways, customize product formations to suit specific applications, and gain further insight into plasma-induced reactivity.
Prior research has documented the utilization of Surface Dielectric Barrier Discharge (SDBD) configurations, which generate gaseous plasma at the interface with conductive liquids serving as electrodes, for the treatment of hollow dielectric structures, such as polymer tubes [1-3]. Despite the extensive development and application of such discharges for diverse purposes, dedicated experiments under well-defined conditions are required for further insights into the potential possibilities for plasma processing applications, especially for developing material processing technology.
In the presented work, we undertook the measurement and quantification of reactive oxygen and nitrogen species (RONS) generated both in the gaseous and liquid phases. We explored their correlations with the power supplied to the reactor, the reactor's configuration, and their temporal evolution. Furthermore, we conducted an examination and quantification of by-products present in the liquid phase, particularly those arising during the processing of specific polymers by the SDBD.